Power driven duplicating machine



Sept. 28, 1937. F. MORRISON ET AL. 2,094,181

`POWER DRIVEN DUPLICATING MACHINE Filed March 9, 1935 7 Sheets-Sheet lHummm Sept. 28, 1937. R. F. MORRISON ET Al. 2,094,181

POWER DRIVEN DUPLIGATING MACHINE Filed March 9, 1935 7 Sheets-Sheet 2Sept 28,'1937- R. F. MORRISON ET AL 2,094,181

POWER DRIVEN DUPLICATING MACHINE Filed March 9, 1935 7 sheets-sheet 5Sept. 28, 1937. R. F. MORRISON ET Al. 2,094,181

POWER DRIVEN DU'PLICA'IHIGy MACHINE Filed March 9, 1935 7 Sheets-Sheet 4Z-iz Zz (0715.' v @bert Twavvsoaz mvzeyg:

Sept. 28, 1937. R. F. MoRRlsoN ET Al. 2,094,181

'POWER DRIVEN DUPLIGATING MACHINE lFiled March 9, 1935 '7 sheets-sne'et5 sept. 281937. R E M'QRmsoN ETAL v2,094,181

POWER DRIVEN DUPLICATING MCHINE sept. 28,' 1937.

R. F. MORRISON ET AL POWER DRIVEN DUPLICATING MACHINE '7 sheets-sheet 7.

Filed March 9, 1955 wa@ NN 4%; vra@ 4Patented Sept. 28, 1937 UNITEDsTATEs f 2,094,181 I POWER nmvEN DUrmcA'rnvG MACHINE Robert F: Morrison,Oak' Park, and Merritt G. Stewart, Chicago, Ill., assignors to Ditto,In-l corporated, Chicago, Virginia Ill., a corporation of WestApplication March 9, 1935, Serial No. 10,214

8 Claims.

'I'his invention relates to duplicating machines and is particularlyadapted to be embodied in a duplicating machine of the' type whereinmaster sheets of paper are employed and the copy sheets are moistenedwith a suitable solvent for the ink or carbon on the master sheet, eachcopy sheet being brought in turn into contactl means of .a wick or otherdevice to which the.

solvent is fed from a reservoirr One form of the invention 'is embodiedin a machine of the type described which comprises -a duplicating drumhaving means for clamping master sheets thereto and for discharging themtherefrom. (The master sheet clamping means is substantially the same asthat shown in the copending application -of Robert F. MorrisonandMerritt G. Stewart, Serial No. '753,336 for Duplicatingpmachines, ledNovember 16, 1934.)

'I'he copy sheets are advanced to the duplicating drum, and a platenroller is adapted to press the copy sheets against'the master sheetsduring the duplicating operations. A power drive is provided forrotating .the drum, and means is provided whereby the operator mayquickly connect the power means to the drum after which the drum will berotated through a complete rotation and positively stop, with themechanism all set for a second duplicating operation at the will of theoperator. The operator thus has both hands free for feeding the copysheets to the machine, and the machine is -held in the proper v adjustedposition for receiving the copy sheets until the operator has fed thecopy sheet into position.

The improved machine also comprises moistening means which isbroughtinto engagement with the copy sheets by the initiation of thepowerconnecting operation, but before the copy sheets are drawn betweenthe duplicating drum and the platen roller.

'Other features and advantages of the inven tion will become apparent asthe.fo1lowing description progresses, reference being had to theaccompanying drawings wherein- Fig. 1 is a side elevation of aduplicating ma'- chine which embodies the invention;

Fig. 2 is a plan view of the machine;

Fig. 3 -is a sectional view taken on the line 3-3 .of Fig. 2;

' means of suitable stub-shafts.

' shaft 35.

Fig. 4 is a fragmentary sectional view on the line 4-4 of Fig.v 3;

Fig. 5 is an enlarged sectional view taken substantially on the sameline as Fig. 3;

Fig. 6 is an enlarged detail View partly in section taken on the line6-6 of Fig. 10;

Fig. 7 is a view like Fig. 5 showing the changed position;

Fig. 8 is a fragmentary sectional view of a part of the mechanism shownin Fig. '1;

Fig. 9 -is an enlarged sectional view taken on the line 9-9 of Fig. 2;

Fig. 10 is an enlarged sectional view on the linen-i0 of Fig. 2;

Fig. 11 is an enlarged sectional view on the line Il-li of Fig; 2;

Fig.v 12 is a sectional view on the line |2-l2 of Fig. 11; and l y Fig.`13 is a fragmentary vview like Fig. 12 illustrating a changed positionof the mechanism.

Referring now to the drawings ferred embodiment of the invention isshown, the numerals and 2| refer to a pair of side frames on which themechanism is mounted. These side frames are supported upon suitablecushion feet such as 23 and 24, and the side frames are connectedtogether by cross beams 25 and 26 suitably bolted to the4 side frames asindicated inr Fig. 3.

A motor 21 is mounted upon the cross frame 26 by a suitable bracket 28,and this motor is gearedto a drum 29 by means of a train of gears shownmost clearly in Fig. 1 and consisting of a pinion 30 on the motor shaftand reducing gears 3l, 32, 33 and 34. Gears 3l, 32 and 33 are mounted onthe side frame 20 (see Figs. 1 and 10) by t The gear 34 is the drum 29in the foljournaled on the axis of drum supporting shaft lowing manner:A main 35 is' supported by means of a bolt 3 6 which projects thrcughthe frame 20 and through a sleeve reduced extension 38 screw threadinginto the shaft. The opposite end of shaft is supported in frame 2il inthe same manner. Thebolt 36 has a shoulder 39 aligning with the innerend of the sleeve 31 to'form an Sleeve 31'has a flange 40 at its innerend, and a washer 4I surrounds the sleeve 4just inside the frame 20.Between the ange 40 and the washer 4I is -a bushing 42 on which ahub 43for the gear 341s rotatably mounted.

This hub 43 is reducedin diameter to receive a ratchet wheel 44 whichhas a wherein a pre- 31 into the end of the shaft 35 where 1t has a endabutment for the plained. Pins 45 secure the hub 43 to a ring 45 (seeFigs. 6 and 10). This ring 46 is recessed as shown at 41 and 48 toreceive rubber inserts 49 and 50, and pins 5| and 52 serve to connectthe ratchet wheel 44 with the member 40 through the rubber inserts 49and 50 thus' permitting a substantial amount of yield in the drivingconnection.

Referring now to Figs. 5 and l0, the ratchet wheel 44 is engaged by apawl 53 which is pivoted on a stub shaft 54 which is secured in a plate55.

The plate 55 is connected to the drum 20 through a pair of plates 'l0and 1| both of which L are mounted on a hub 3S of the drum so as to beArotatable thereon, these two plates being fastened together, asillustrated in Fig. l0, by means of the bosses at 12 and it and rivetswhich pass through them. These bosses are shown in dotted lines in Figs.5 and 7. The plate 1i has a lateral extension which is slotted at J4(see Fig. 5) to receive a stud i5 which is mounted on an end disk 1t ofthe drum 29. This provides for angular adjustment of the drum withrespect to the plates it and li and through them with respect to the-plate 55 and the pawl 53. The pawl 53 is yieldingly pressed toward theratchet wheel 44 by means of a spring 51. Also interposed between thepawl 53 and the plate 55 is a yielding stop member 58 which is pivotedon the same stub shaft 54 that carries the pawl 53 and is backed up onone side by a rubber cushion 50 supported by a bracket 00 on the plate55,.While on the other side there is provided a stop pin Si to hold themember 58 up against the rubber block 55. The plate 55 is notched asindicated at 52 to receive l ay latch 53 and a trip arm 54 is providedwith a yielding abutment 65 for engaging the upper end of the pawl 53and a shoulder on the member 53. A suitable rubber block S0 acts as acushion for the abutment t5. The latch 03 is pivoted on a shaft 01 towhich the trip arm 64 is pinned, and a lateral extension B8 on the triparm |34 extends over the latch arm 63 and houses a spring te whichyieldingly presses' the latch arm 63 downwardly. 'I'he trip arm 64 has alug 64a carrying a pin 04h which engages lug 03a on latch 63 to raiselatch 53 with trip arm 04. Trip arm 54 is drawn down by a spring H8connected at one end to trip arm 04 and at the other end to the sideframe 20. (See Figs. 2 and 5.)

It is believed to be evident from the description just given that, whenthe motor is driving theratchet wheel 44 in a counter-clockwisedirection, the pawl 53 can be engaged with the ratchet wheel to causethe plate 55 to turn therewith by merely raising the trip arm 64 out ofthe path of the upper end of the pawl 53 and the stop member 58. Thusdriving connection is established from the ratchet wheel 44 through thepawl 53 and its stub shaft 54, plate 55, andl plates 10 and 1| to thedrum disk 16 to rotate the drum about the shaft 35. rihe hub 36' of thedrum is mounted on suitable roller bearings 56 on the shaft 35. (SeeFig. l0.)

The moistening apparatus comprises a tank containing a supply ofmoistening uid, a conduit 8| leading from this tank to a moistening unit82 which moistening unit has a. felt pad S3 through which the iiuid isfed to the 'copy sheets, one of which is indicated at 84 and suitablevalve means controlled by an arm v85 operating a suitable valvemechanism, the details of which are not shown here asthey form no partoi the present invention. v

The arm 85 is actuated once for each revolution of the drum by means ofa cam 80 which is secured to the opposite end of the drum from theratchet wheel 44. The details of this uid feeding mechanism are quitesimilar in principle to those illustrated in the prior applicationhereinbefore referred to except that in the present instance the valvesare actuated directly from the drum by means of the cam 80 through thearm 85. It will be noted that the arm 85 at its upper end has a lateralprojection 81 engaging the lower end of a set screw 88 to vary theangular relation of the arm with respect to a valve operating bar 89 foradjusting the valve opening. A spring 85a holds projection 81 up againstthe screw 08.

The moistener 82 is pivoted'on a shaft 90, and the lower ends of arms 9|which carry the moistener t2 are drawn out by means of a spring S3 (seeFig. 3) so as to normally move the moistener down to bring the feltstrip 83 against the copy sheet. The arm 9|, located at the left handside of the machine (see Fig. 11), has-a pin 9| which engages a leverarm 54. This arm 04 is also pivoted on shaft 90 and is provided with alaterally extending vstop plate 55 adapted to be engaged by a pawl S5 ona bell crank 91 to hold. the moistener in raised position as shown inFig. 5.

A suitable spring 0 normally urges the bell crank lever El into theposition shown in Fig. 5 and Fig. i3. The lower end of the bell cranklever tl has a pin 99 projecting into the path of an arm it@ so thatwhen this arm is moved inward, the bell crank lever is moved to trip thepawl @6 and to allow the moistener to move down against the copy sheet.`Arm |00 and an operating arm |04 for operating the tripv arm $4 are bothcarried on the shaft 51, and they are connected at their lower ends by across bar 02. This cross bar is shown as a pipe suitably covered with arubber covering H03.

The two arms are adapted to actuate the bell crank lever 91 and the triparm 64 in a definite timed relation so that upon the initial movement ofthe cross bar 02 by the operator, he iirst trips the pawl @0 to allowthe moistener 82 to move down upon the copy sheet which has been fed tothe drum before the trip arm 64 has moved up past the upper end of thepawl 53 to start the drum in rotation. This enables the moistener to beplaced in position just before the drum starts to advance the copysheet. J

As the drum rotates, it resets the trip mechanism as the end of thelatch arm 03 is permitted to move down after the plate 55 has moved outof the way. .A stop pin |04 limits this movement by engaging arm |00 ofthe actuating mechanism composed of the two arms |00 and 40|. As thedrum continues to rotate, it resets the moistener in raised position bymeans of a cam |05 (see Figs. l2 and 13) which is mounted on a disk 15'mounted in the end of the drum 29 at the left hand side of the machine.The mounting means for cam A05 consists of a plate |06 fixed to the disk15 to which the cam |05`is pivoted, a stop member |01 being provided onthe plate, and a spring 08 being provided to hold the cam against thestop member |01.

The cam i05 is so positioned on the disk 16 that when' the drum isrotating in the usual,di rection of feed, indicated by the arrow in Fig.l2, the cam |05 strikes a roller |09 on the end of arm 94 after the copysheet has passed beneath the moistener. Cam 05 then moves the arm 94 outto permit pawl 90 to hook over stop plate S5 and latch the arm 94 inposition to hold the -imrsini ci .zusam asti, mammal@feirsefwsrrrsafsveag marasme! if 'qui @dra escaner "mi membig3 Sdiii 'th while'.testator-irse" s3 62 incuria minets Nn hexoperator. wishesrto makixgspl strikes the bar vl or moves member. i@ v 'Illikiftrespisogthetoperatorfs laction .is the'ig'g1ii0tf0iariii |l00'1.with2pin "99"'on-.bell crarltflafi1 mViIEli-isiSrleasesthel pawl 9|1'a`llowl` ing thespring 93 to swing the arm 9| and the moisteHihf-*thsl ||0t`o bring themoisteningtiicdwh gainst'the copy sheet. The movement of the bar |02causes arm |0| to raise trip arm 64 up to bring the abutment 65 rstabove the top of the stop member 58 to release the drum for rotation(see the position shown in Fig. 7), and then nally to bring the abutment65 out of the Way of the upper end of the pawl 53. Pawl 53 under `.theinfluence of the spring 51, moves down into engagement with the 'teethof the ratchet wheel 44 (see Fig. 8).

The drum starts to rotate, but not with a sudden motion owing to thefact that it is cushioned in the connection of the ratchet Wheel 44 withthe hub of the gear 34 through the rubber cushions 49 and 50. The drumthen rotates by means of the power applied by the motor through thetrain of gears, and, after the plate 55 is moved out of the way, thetrip arm 64 lanc'l the latching lever 63 are pulled down by the springH8, to bring them back tostop position and to bring the arm |00 upagainst the stop |04. Near'the end of the drum revolution, the resettingcam engages the roller |09 on thel arm 94 and moves this arm. outwardwhich again raises the moistener. The pawl 96 hooks over plate 95 tohold the moistener in raised position. The plate 55raises the arm 63 asthe drum returns to its original position, but the spring ||8 which isstronger than spring 69 holds the trip arm 64 down in the path of thepawl 53 so that the abut' ment 65 engages with the pawl and releases thepawl just before the stop member 58v comes into contact with theabutment 65. The latching lever sa drops into thenotch s2 and the drumis locked .o springsile i .nfhaveibeen show engaged in ther lnotchxxn,

he afnemer eeangrepeat thevcycle: ydepressing-themen.|02;, ,i

wmleecertairrrembodiments 0i/.the i...

nddescrhed. it istaloe un capable..` 0f many'. medicat ris itin anuphaati-ngi drum,` means' for holding .a master sheet n said drum,; meansfor-applying a copysheet and a moisteningluid to said master sheet,power drivennmeansxfor rotating said drum, and control :mechanismoperable to connect said drum to said powerrwdr'iven means and havingmeans to stop zsaidwdrumafter a duplicating cycle in position `to begin;aanew duplicating cycle, `said control mechanismr comprising pawl vandratchet means o connectfsaid power driven means to said drum,nd-.manually operable trip members controlling l:said :pawhand ratchetmeans together with means movable .with the drum and engaging with saidmembersA to lock said drum. against forwardvor 2. In.a;duplicatingmachine, a frame, a ating kkdrlum rotatably mounted thereon, a powerriverifmember rotatably mounted on said frame,

. means for causing said locking means to release the drum for rotationand to actuate said con--v necting means;

3. Ina duplicating machine, a frame, a duplicating drum rotatably'mounted thereon, a power driven member rotatably mounted on said frame,locking means locking said drum in one denite position while it isatrest, means for connecting said drum to said power driven member torotate the drum, said connecting means being controlled by said lockingmeans, and'manually operable means for-causing said locking means torelease the drrn for rotation and to actuate said connecting means, saidlocking means being operable to release the drum from said power drivenmember and stop the drum inthe original position at the end of acomplete rotation.

4. In a duplicating machine, a frame, arduplieating drum rotatablymountedthereon, a power driven member rotatably mounted on said frame,

holding means positioning said drum in one defito release the drum forrotation and to' actuate.

said connecting means, said power driven member having a yieldingmounting to absorb the shock of its connection to the drum, saidvconnecting means comprising a pawl pivotally mounted on the drum, andsaid power driven member having ratchet teeth for engaging said pawl.

5. In a duplicating machine, a frame, a duplicating drum rotatablymounted thereon, a power driven member rotatably mounted on said frame,a. copy sheet table, moistening means for moisdupli-.slockingfmeanslocking said drum in one definite v positionwhile it isat rest, means for connecting frame, a duplicating drum .rotatablymounted thereon and having master sheet clamping means, a copy sheettable adjacent to said drum, and

moistening means for moistening. copy sheets be-v fore applying them toamaster sheet on said drum, manually controlled means to intermittentlyrotate the drum from a continuously driven member, said manuallycontrolled means comprising a spring pressed paWl On the drum adapted toengage said driven member, aY stop member on the drum, `a latch leverengaging shoulder on said drum adjacent said stop `member, a trip leverpivoted on the frame and movable into the path of said pavvl and stopmemher to iirst release the pawl and then stop the drum, a latchinglever pivoted with the trip lever and having a lost motion connectionwith the first named lever, and a cross bar over said table andoperatively connected to said trip lever.

7. In a duplicating machine comprising a rame, a duplicating drumrotatably mounted thereon and having master sheet clamping means,

'a copy sheet table adjacent to said drum, and

moistening means for moisteni'ng copy sheets before applying them to amaster sheet on said drum, manually controlled means to intermit- 4tetly rotate the drum from a continuously driven member, `said manuallycontrolled vmeans comprising a spring pressed pawl on the drum adaptedto engage said driven member,.a stop member on lthe drum, a latch leverengaging shoulder on said drum adjacent said stop member, a trip leverpivoted on the trame and movable into the path of said pawl and stopmember to first release the pawl and then stop the drum, a latch-y inglever pivoted with the trip lever and having a lost motion connectionwith the rst named lever, and a cross bar over said table andoperatively connected to said trip lever, said latch lever and said triplever being pivoted' on a common axis, said trip lever having a portionprojecting over the latch lever and a spring interposed between saidportion and the latch lever.

3. In a duplicating machine comprising a frame, a duplicating drumrotatably mounted thereon and having master sheet clamping means, a copysheet table adjacent to said drum, and moistening means for moisteningcopy sheets before applying them to a master sheet on said drum,manually controlled means to intermittently rotate the drum from acontinuously driven member, said manually controlled means comprisingmechanism for connecting the drum to the driven member whereby to rotatesaid drum, a pair of control members having means :perable to securesaid drum against rotation in either direction, one of said controlmembers including means to release the connecting mechanism between thedrum and the driven member.

MERRITT G. STEWART. ROBERT F. MORRISON.

